Italian tennis star Jannik Sinner has faced a doping controversy after testing positive for the banned steroid clostebol, which he claims was transmitted unintentionally during a massage from his physiotherapist. The International Tennis Integrity Agency (ITIA) cleared him of wrongdoing, allowing him to compete in and win the US Open. However, the World Anti-Doping Agency (WADA) has until the end of September to appeal this decision, as they consider the case still open and ongoing. Sinner expressed that the uncertainty surrounding the investigation affected his enjoyment of the sport, despite his recent triumph. While his legal team has provided credible evidence supporting his case, an appeal could threaten his US Open title. The deadline for appeals is fast approaching, with a potential verdict from the Court of Arbitration for Sport expected within months.